When MPNZ's load shedding percentage exceeds 75%, the bar on the graph should move into a red zone. It signals the USI transmission grid is approaching peak loading and as MPNZ's load shedding percentage approaches 100% there is a reasonable likelihood of new chargeable peak periods occurring.

When the end of the bar is red MPNZ is deploying its maximum load control capability (100%). The longer MPNZ load shedding remains at 100% the more likely new chargeable peak periods will occur on the USI grid. This forms a reasonable signal for consumers to manage their load and to continue doing so until the bar on graph moves down from 100% and ceases to be red at the end.

When the whole bar is white (0%) MPNZ is not controlling any load and the grid will be operating at normal load levels. This bar is updated every 5 minutes.

Apply Online

We’ve made it easy to connect to our network with our online tool.
If you have any problems with your application call us on 03 311 8300.

When you submit your application, you will receive an email confirming your request details.

You can lodge up to 5 supply requests using this form. In order to lodge multiple requests, you will be presented with a summary page at the end of this process where you can opt to include additional requests in a single enquiry. This is optional, so if you only want to lodge a single request that is fine.

Connection Type:

Select which type of connection you wish to apply for, then hit ‘continue application’ to begin.

Important information for building and electrical contractors

1. Application for Temporary Supply and New Connection

1.1 All applications for supply are to be made on the Network Connection Application online form on this page. Alternatively you can contact MainPower directly.1.2 In normal circumstances, a new installation will not be connected to the supply until such time as MainPower has received notification from the Electrical Contractor.

2. Electrical Contractor’s Responsibility

2.1 It is the Electrical Contractor’s responsibility to ensure that proper provision is made for underground supply. On the MainPower network only MainPower approved contractors are permitted to access service boxes, link boxes or kiosks.2.2 Where the Electrical Contractor has installed the service main to the power pole, they must contact MainPower to advise that the service cable is required to be raised and terminated. This is chargeable to the Electrical Contractor or customer. Only MainPower approved contractors are permitted to climb poles or access pole fuses.

3. Water Heating

3.1 MainPower will control all domestic water heater cylinders 180 litres and above.3.2 Booster elements in solar water heaters are to be controlled by MainPower.3.3 Booster elements in diesel water heaters are to be controlled by MainPower.

4. Mains

4.1 A certificate of compliance must be provided before any connection to the network can be completed.4.2 If the load is above 60 Amp 1-phase or 32 Amp 3-phase, please consult MainPower’s Planning Office.4.3 Additional requirements may apply to cover installations with large fixed-heating loads. Advice should be obtained from MainPower’s Planning Office before any wiring of mains is commenced on these particular installations.4.4 Commercial Installations: The minimum size mains shall be: 3-phase 16 sq.mm plus 16 sq.mm Neutral in areas reticulated on 3-phase supply.